Leaf turner



W. F Ll ETHER April 25, 1933.

LEAF TURNER Filed Aug. 3, 1931 Patented Apr. 25, 1933 PATENT OFFICEWALTER FLIETHER, OF VH'BEBT, GERMANY LEAI' TUBNE'B Application flledAugust 8, 1931, Serial No. 554,844, and in France May 26, 1931.

This invention relates to a music leaf-turner and consists in theprovision of a casingl from which projects a plurality of pivoted,spring-Controlled leaf-turning arms, means being provided for retainingthe arms in 'tensioned position and for releasing them one by one so asto turn the leaves.

Fig. 1 of the accompanying drawing represents a Vertical section of adevice according to the invention,

Fig. 2 is a horizontal section on the line II-II of Fig. 1,

Fig. 3 is a section on the line III-III of Fig. 2,

Fig. 4 is a side view of the device on a reduced scale, and

Fig. 5 is a view showing the device in operation.

The device comprises a casing 1 containing a central, rigid shaft 4whereon a plurality of discs 6 are rotatably mounted one above theother. Each disc is recessed for the reception of a spring 7 one end ofwhich is connected to the shaft 4 and the other to the periphery of thedisc. Connected to or integral with each disc is an arm 5 which projectsradially through a slit in the casing, the arrangement being such thatalthough the discs are situated in different horizontal plancs,

the arms are maintained in the same horizontal plane. The free endofeach arm is upturned and fitted with a leaf-turning plate 8, thelatter being preferably encircled by a rubber band 9 in order to reducethe shocks on one plate being thrown by its spring against another.

The plates 8 are inserted between the musicleaves and then turned inopposition to the Springs 7 from the position shown in Fig. 2

into engagement with a catch 11 which is adapted to maintain all thearms in tensioned position.V The catch 11 is controlled by a spring 13and bears under the influence of the latteragainst an inclined surface14 on a slide 12 which passes through a slot in the catch member. Theslide 12 is enclosed in a sleeve 10 and is controlled by a spring 20 inco-operation with which it can be reciprocated through the medium of awire 19 guided in known manner in a fiexible sheath. An-

other catch 17, which is pivotally mounted and Controlled by a spring18, is adapted to enter between the first pair of arms retained by thecatch 11. This is eifected by means of an actuating rod 16 which ispivoted to the catch 17 and which bears under the influence of thespring 18 against an inclined surface 15 on the slide 12.

The casing 1 is fitted with a sleeve 2 whereby it can be mounted on thesupporting pil- 60 lar of a music stand, as shown in Fig. 5 and securedthereto by means of a set screw 3. The wire 19 may be connected to afoot lever through the medium of which it can be operated forreciprocating the slide 12. By a 05 depression of the foot lever theslide is moved in opposition to the spring 20 and the two catches 11 and17 will be operated. The latter catch enters between the first pair ofunreleased. leaf-turning arms and thus retains all the arms with theexception of the first one, and thus the latter is released by the catch11 which is operated by its spring for turning the respective leaf.VVhen the foot lever is released, the catches return to their initialpositions, and the arms still remaining will be retained by the catch11.

VVhile the device is shown as attached to a self-supporting music stand,it may naturally be attached to a stand mounted on. a piano or table,and the foot levei' may be replaced by a hand-operated lever.

I claim:

A leaf-turner comprising a. casing, a plurality of radial, pivoted,spring-Controlled leaf-turning arms projecting from said casing, aspring-Controlled slide, a pair of spring-Controlled catches bearingagainst inclined surfaces on said slide and adapted to be operatedthereby on the slide being reciprocated, and means for reciprocating theslide, one of said catches adapted normally to retain the arms .intensioned position and to release them on being operated, the othercatch adapted, on being operated, to enter between the first pair ofunrelea-sed arms and. ensure the release of one arm at a. time.

WALTER FLIETHER.

